Golmund clone
Does anyone knows the official the value of bias mimesis 9.2 ?
With R20 330Ω gives 0.6 V - 0.28V on gates for P-N devices and about 30-40mA for each device. My devices are EXICON. +/- 70 V rails.
Regards Nikos
"(E) T11 0.6 V (E) T12 - 0.28V" only 0.88v to open "BIASED" the two MOSFET final stage seems a little, I think your amplifier works in class B. Acording by datasheet SK134,SJ49 Gate-source cutoff voltace 1.45v u. need measured around T11 E+1.45V, T12 E -1.45V for running class A-B. thermal stability remain good questions,ideally u need R20 combination or replaced with super diode circuit, Mosfet output stage and equaly biassed around 50mA for all devices. good luck.
Does anyone knows the official the value of bias mimesis 9.2 ?
With R20 330Ω gives 0.6 V - 0.28V on gates for P-N devices and about 30-40mA for each device. My devices are EXICON. +/- 70 V rails.
Regards Nikos